Marble T-shaped slot flat plate is made of high-quality “Jinan Blue” after mechanical processing and manual grinding, which has the advantages of high precision, long service life, acid and alkali resistance, and is not easy to deform. It is suitable for inspection, precision measurement and precision marking in the machinery processing and parts manufacturing industry.
The main features of the marble T-shaped slot flat plate are stable precision and easy. This is because: the marble plate has a dense organizational structure, a smooth and wear-resistant surface, and a small roughness value; the marble has completely disappeared internal stress long-term natural aging, and the material is stable and will not deform; it is resistant to acid, alkali, corrosion, and magnetic; it will not rust when damp is easy to use and maintain; it has a small coefficient of linear expansion and is less affected by temperature; after the working surface is collided or scratched, it will only pits, not protrusions, burrs, and does not affect the accuracy of measurement. The main disadvantage of marble plates is that they cannot withstand excessive impacts and knocking, and will deform at high humidity. The moisture absorption rate is 1%. Marble platform is a precision reference measuring tool made of natural stone materials. It is ideal for the inspection instruments, precision tools, and mechanical parts. Especially for high-precision measurement aspects, because of its unique characteristics, it makes the cast iron plate look inferior. Marble platform is for measurement work in industrial production and laboratories. The main mineral composition is pyroxene, plagioclase, a small amount of olivine, black mica, a small amount of magnetite, with a black luster, precise structure, and after billions of years of aging, it is uniform, stable, strong, hard, and can high precision under heavy load.
Marble T-shaped slot flat plate is made of high-quality “Jinan Blue” stone after mechanical processing and manual grinding. has a black luster, precise structure, uniform texture, good stability, high strength, and high hardness, and can maintain high precision under heavy load and general temperature, and has advantages of not rusting, acid and alkali resistance, wear resistance, not magnetization, and not deformation. Granite flat plate is suitable for measuring tools in machine factories.
The main difference between the cast iron platform and the marble T-shaped slot flat plate is that the materials used in their manufacturing and processing methods are different.
The cast flat plate is made of cast iron material, and the cast iron material used is fine-grained gray cast iron or alloy cast iron. The common processing method is the scraping method The scraped flat plate working surface can store lubricating oil and accommodate small gray debris in pits, which improves the reliability and stability of the datum plane.
Marble-shaped slot flat plate is made of granite material, and the demonstration material used is hard marble such as granite, diorite, gabbro, etc., which are hard marbles with fine particles and dense structure. The processing method is to cut and drill the rough stone, and then grind and polish it for many times until it is mirror-. Marble T-shaped slot flat plate has more wear-resistant and stable performance.
Physical properties of marble T-shaped slot flat plate:
Flat tolerance according to: GB4987-85 standard:
00 grade = 2 × (1 d / 1000) um
0 grade = 4 × (1 d / 1000) um
1 grade = 8 × (1 d / 1000)
(d is the diagonal mm) (the measurement temperature is generally 20 ± 2 ℃
Specific gravity: 2970-370 kg/㎡ Compressive strength: 245-254 N/m Linear expansion coefficient: 4.61 × 10-6 /℃, water absorption: ﹤0.13% Shore hardness: Hs70 or above
